Reaction Rates

Front

What happens to the reaction rate when the concentration of reactants is increased?

Back

The reaction rate increases.

Front

What is a catalyst?

Back

A substance that increases the rate of a reaction without being used up during the reaction.

Front

What effect does decreasing the temperature have on the energy of reactants?

Back

The energy of the reactants decreases.

Front

How does grinding a seltzer tablet into powder affect the rate of reaction?

Back

It increases the rate of reaction due to increased surface area.

Front

What happens to the rate of product formation if the concentration of reactants is increased?

Back

Products will form faster.

Front

Define reaction rate.

Back

The speed at which reactants are converted into products in a chemical reaction.

Front

What is the effect of temperature on reaction rates?

Back

Generally, increasing temperature increases the reaction rate.

Front

Explain the role of surface area in reaction rates.

Back

Increased surface area allows more collisions between reactants, increasing the reaction rate.

Front

What is the collision theory?

Back

The theory that states that for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation.

Front

How does stirring affect the rate of reaction?

Back

Stirring increases the rate of reaction by distributing reactants more evenly and increasing collisions.